Ventilator



April 10, 1951 L. J. JENN 2,548,607

VENTILATOR Filed July 2, 1945 v, 2 Sheets-Sheet 2 Patented Apr. 10, 1951 VENTILATOR Louis J. Jenn, Berea, Ohio Application July 2, 1945, Serial No. 602,796

12 Claims. 1

This invention relates to a ventilating device and particularly to such a device disposed adjacent a passage through the wall of a room and adapted to draw fresh air from the exterior of a wall into said room or to move air from a room to the outside of said wall.

It is desirable in many rooms in business places and residences, particularly such rooms as kitchens in residences and restaurants and dining rooms in restaurants to have the air moved therefrom to keep the atmosphere in fresh condition and eliminate odors. It is also desirable to have a simple, eflicient and inexpensive device which can be placed adjacent a passage through the wall of a room so that air may be drawn into or removed from said room and to have such a device protected from moisture and from which moisture may be efiiciently drained.

It is an object of this invention to provide a simple and efficient ventilating device which can be produced and installed at a comparatively small expense and which can be used to draw air out of a room and which has means for regulating the amount of air so drawn.

It is another object of the invention to provide" a device comprising a conduit adapted to be disposed in and extend through a passage in the wall of a room, means in said conduit for closing or partially closing the opening therethrough, a

member disposed at and secured to the outer side of said wall, a motor carried by' said member, a fan operated by said motor and disposed within said member, together with a casing surrounding said motor and cooperating with said member in the disposition of moisture.

It is more specifically an object of the invention to provide a ventilating device comprising a conduit adapted to be disposed in and extend through a passage through the wall of a room, said conduit preferably being adjustable to suit various thicknesses of walls, an annular member at the outer side of said wall surrounding said conduit and into which said conduit projects slightly, said annular member having an inner'wall with an outer concave surface extending downwardly andoutwardly at its lower end, a bracket secured to said inner wall, a motor supported on said bracket at the outer side thereof having a driving shaft, a fan secured tosaid driving shaft at the inner side of said bracket, and a casing preferably substantially of bell shape surrounding said motor and having a free edge extending a short distance into said annular member.

It is still further an object of the invention to provide such a device as set forth in the above"=" paragraph, said conduit having a damper therein for closing the passage therethrough or regulating the size thereof, and a grill disposed in front of said conduit at the inner side of said wall.

These and other objects and advantages of the invention will be fully set forth in the following description made in connection with the accompanying drawings in which like reference characters refer to similar parts throughout the several views and in which:

Fig. 1 is a view in central vertical section through a device;

Fig. 2 is a vertical section taken substantially on line 2-2 of Fig. l, as indicated by the arrows; Fig. 3 is a vertical section taken substantially on line 33 of Fig. 1, as indicated by the arrows; Fig. 4 is a vertical section taken on line 4-4 of Fig. 1, as indicated by the arrows; and

Fig. 5 is a view in elevation as seen from the inner side of the wall.

Referring to the drawings, a device is shown comprising a conduit 10 adapted to be disposed in a passage formed through a wall; I l of :a building, which wall preferably will be an outer-wall. While conduit It] could be variously formed, in the embodiment of the invention illustrated it is ,shown as cylindrical and having a peripheral flange Illa engaging the inner side of wall H. A member l2 of plate form is provided, and while this could be of various shapes, it is shown as substantially circular, the same extending outwardly of flange 10a and being securedto. the inner side of wall H by suitable screws or other fastening means l3. Member I2 at its portion in front of conduit [0 is provided with a plurality of vertical slots l2a. so that it forms a grill. Conduit l0 extends to the outer side of wall Hand has its outer end surrounded by a portion or member 14 fitting thereon, which portion is slidable longitudinally of conduit l0 and can: be

. moved and positioned to fit various thicknesses of walls. Member I 4 preferably has a flared outer end Ma. An annular member I6 is provided and while this might be variously made, it is illustrated as formed from sheet'metal. Member It has an outer wall |6a with an outer convex surface which has its inner portion disposedsubstantially at right angles to the inner side of wall H. As shown in Fig. 1, surface 16a at its'top slopes downwardly and outwardly from wall H. Wall Ilia has a peripheral. flange I'Bb engaging wall I l and secured thereto by suitable. fastening means, such as the screws. l1. Member IB has an inner wall Mic with an outwardly directed concavesurface, wall lficmeeting outer-wall l6a at wall I I.

a comparatively sharp angle and substantially in line. Inner wall 160 extends to member l4 and has a short cylindrical flange 46d fitting about member l4 inwardly of the flared portion Ma. It will be noted that as shown in Fig. 1, inner wall 160 extends downwardly and outwardly at its lower side. A bracket I9 is provided, and while this might be variously formed, in the embodiment of the invention illustrated, it is shown as a bar or stripextending across member IS diametrically thereof and having end flanges Illa seated against inner wall I60 and secured thereto in any suitable manner, as by welding. The ends of bracket I9 extend outwardly in converging, relation and said bracket has a vertical central portion [9b to which a motor 29 is secured by bolts 2! and nuts 22. Motor 20 has2a1drivingshaftr23, and a fan 24 has a hub 24a secured to shaft 23 in any suitable manner, as by the set screw 25. Fan 24 has a rear plate 241) of circular form, to which are secured a-plurality of blades 24c ex- "tending inwardly from plate 2412. Fan 24 is disposedwithin member l8. Conductors or a conductor-carrying cable 2Bextends from motor 2U along the upper side of bracket I9 to an opening Hie in the'top of inner wall Ilic to an outlet fix- "ture 2-8 fromwhich said cable 26 can extend into anopening in wall II. A bracket 35! is secured totheouter end of motor2fi, the ends of which are secured to said motor by screws 3 I. Bracket '30 has anoffset centralportion of curved form against which seats the central'portion of a casiing -32 secured to bracket-Baby the screw 33 and nut' '34. Casing =32 surrounds motor 20 and is of substantial bell shapa'the same having an outwardly fiaring edge portion with its free edge extendingashortdistance within inner wall IBc. Motor 20, fan TZ L-casing '32 and member l6 are arranged substantially coaxially-with' conduit H).

A flanged ring 36 is securedin conduit H] interdriven. Air will be drawn irom the room to be ventilated through members H! and 14. The

-damper or valve 38 will be swung open a distance 'determinedby the strength of the current of air create'd'by fan 24. As stated, when fan 24 is inoperative, valve 38 will move to closed position. The air-drawn from the room is discharged by fan 24 through the annular opening between casing 32 and membertfi. The motor is disposed outwardly of the fan so that the air taken from "the room does not passover the motor. "dust, etc. from the room is thus not deposited on motor 20. The motor 20 is also disposed at Dirt,

'the'outerside of-the wall so thatshould any com- "bustion occur from over-heating or other reason, afire will not 'be started in'thebuilding. Inner "walll6c is arranged so that any moisture will pass 'to theilowerside thereof and will drain outwar'dly and downwardly and will drop away from Any'moisture coming through conduit t0 -w111 bevdirected-byithe flared end Ma into the inner "wall lBc. Anything thrown out by the blades 'of fan 24 willalso pass into the'enclcsure :of in'nerwall 16c andwill :be directed outwardly and downwardly by said' inner wall. The motor risprotectedifromthe elements by casingz32 and v operated by well known commercial means.

it will be noted that the free edgeof this casing extends a short distance into member 16. No rain or snow can thus reach motor 26 or fan 24 and any rain or moisture deposited on or draining from casing 32 will be discharged onto the outer portion of inner wall its and will be directed outwardly and downwardly thereby and away from wall H. The device is designed to remove smoke, stale air, odors, etc. from kitchens or otherlrooms. A comparatively small conduit is necessary passing through the wall and yet the device discharges a large volume of air. It

has a larger discharge outlet area than the conventional blower and works against small static pressure. The damper 38 prevents any air currents entering the room from the outside. The

annularopening-between casing 32 and member l6 relieves any air pressure which might be caused bya strong wind. The motor and fan being on the outer side of the building, the device operates quietly and any sound is not carried into the building by air-currents. The device is so designed that it can-be mounted either in a vertical Wall or in the ceiling with equal facility. A sealed joint is preferable between portion 150 and M. The members l6 and -32 can be conveniently spun from metal such as aluminum. If desired, the motor 28 could be intermittently The device has been amply demonstrated in actual practice and found to be very successful and efficient. 1

Itwill,-of course,-be'understood that various changes'maybe made in .theform, details, ar-

' .rangementand-proportions of'the parts,.without departing from the scope .of applicant s inven- -tion;-whichgenerally stated, consists in a device capable of carrying outthe objects above set forth, in the parts and combinations of parts disclosed and-.defined-in the appended claims.

-What is claimed is:

1. A ventilating device-having-in combination, a:conduit adapted to ice-disposed in a passage extending through a wall. and extending through said passage-andprojecting at one side thereof,

van annularmemben disposed against said wall at saidend-having an inner wall into which said conduit extends, said inner wall having a concave surface sloping downwardly to'its outer edge at its bottom,'a bracket'securedto said inner wall, a-motor'mounted onsaidbracket and having a driving shaft, a f-anmounted on said shaft and disposed within said annular member, and a casing: of general semi-spherical shape surrounding and coaxial with said'motor having an annularwalL extending laterally a short distance into but having its edge spaced'from said inner wall,

*said casingadjacent said annular member having a'fiaring'portion with an outer concave surface-wherebymoisture will drain from the bottom portion of said'casing to said inner wall and will 'be directed outwardlyby said innerwall.

:2. A ventilating device having in combination,

:a conduitsadapted tobe-disposed' in and extend through an opening'in a wall, said conduit projecting at the outer side of said-wall, an annular *memberrdisposed'at said'outer side and disposed outwardly of said passage and conduit, said conduit having a fiaredouter end extending a short distance into said annular member, said annular memberfhaving an inner wall with a concave surface,-thus extending downwardly and outwardly atits lower side, a bracket comprising a bar extending acrossqsaid annular member and secured ;to -saidinner wall, a motorssecured to said bracket a at the outer side thereof having a driving shaft,

a fan secured to said driving shaft at the inner side of said bracket and disposed within said annular member, a substantially bell-shaped casing surrounding said'motor, said casing, motor and fan being substantially co-axial with said conduit, said casing having a free edge extending a short distance within said annular member and spaced from said inner wall whereby moisture can drip from said casing at its lower portion to said inner wall and will be directed outwardly and downwardly by the latter.

3. A ventilating device having in combination, a conduit adapted to be disposed in and extend through a passage through a wall, a swingable damper disposed in said conduit, an annular member of sheet metal surrounding the outer end of said conduit and having a flange disposed against the outer side of said wall, means securing said flange to said wall, said member having an outer wall with an outer convex and outwardly converging surface and having an inner wall with a concave surface, thus extending outwardl and downwardly at its lower end to said outer wall, said walls meeting and being connected in substantially a circular line, a strip bracket secured to and extending across said inner wall, a motor secured to the outer side of said bracket and having a driving shaft, a fan secured to said driving shaft at the inner side of said bracket, a bracket secured to the outer side of said motor and a cup-shaped casing secured to said latter bracket surrounding and coaxial with said motor and having a flaring free edge eX- tending a short distance into said annular member.

4. A ventilating device having in combination, a conduit adapted to be disposed in and extend through a passage through a wall, a swingable damper disposed in said conduit, an annular member of sheet metal surrounding the outer end of said conduit and disposed against the outer side of said wall, means securing said member to said wall, said member having an outer wall with an outer convex outwardly converging surface and having an inner wall with a concave surface extending outwardly and downwardly at its lower end to said outer wall of said member, a strip bracket secured to and extending across said inner wall, a motor secured to the outer side of said bracket and having a dI'iV'. ing shaft, a fan secured to said driving shaft at the inner side of said bracket, conductors extending to said motor, said inner wall having an opening therethrough through which said conductors extend to an opening in said wall, a substantially bell-shaped casing carried by said motor and disposed substantially coaxially therewith, said casing having a free edgeextending a short distance into said annular member.

5. A ventilating device having in combination, a conduit adapted to be disposed in a pasage extending through a wall and extending through said passage and projecting at one side thereof, an annular member disposed against said wall at said end, means securing said member to said wall, said member having an inner wall into which said conduit extends, said inner wall having a concave surface sloping downwardly to its outer and free edge at its bottom, a motor supported by said member outwardly thereof, a fan driven by said motor and disposed within said member, and a casing surrounding said motor having a free annular edge extending into said annular member.

- 6. A ventilating device having in combination, a conduit adapted to be disposed in a passage extending through a wall and extending through said passage and projecting at one side thereof, an annular member disposed against said wall at said end, means securing said member to said wall, said member having an inner wall into which said conduit extends, said inner wall having a concave surface sloping downwardly to its outer and free edge at its bottom, a motor supported by said member outwardly thereof, a fan driven by said motor and disposed within said member, and a casing surrounding said motor closed at its outer 'portion and having a free annular edge extending into said annular member within said inner wall, said annular member having an annular outer surface which converges outwardly and thus extends outwardly and downwardly at its upper portion wherebymoisture will drain onto said casing.

7. A Ventilating device having in combination, a conduit adapted to be disposed in and, extend through a passage through a 'w'all, an annular member' at the outer side of said wall extending about said conduit, said conduit projecting 'beyond said outer side, a motor supported on said member outwardly thereof, a fan driven by said motor disposed in. said member, a cup-shaped casing enclosing said motor having a free annular edge spaced fromand adjacent said member to form a discharge opening for air moved by said fan whereby said air does not pass over said motor, said annular member having an inner wall with a concave surface converging inwardly and thus extending outwardly and downwardly at its bottom portion and said free annular edge of said casing projecting within said inner wall whereby said inner wal1 forms a drip ring.

8. A ventilating device for a building having an outer portion with a passage extending therethrough, having in combination, a conduit adapted to be disposed in said passage, a plate disposed in said conduit and swingable about an axis extending transversely to the axis of said conduit and at one side of the same to close more or less the passage through said conduit, an annular member secured to said portion at the outer side thereof and having an inner concave surface extending to said conduit, a fan disposed within said annular member substantially coaxially of the same and said conduit, a motor having its driving shaft secured to said fan for driving said fan, a dome-like casing secured to said motor and enclosing the same, coaxial therewith, and having a flaring free edge disposed within said concave surface of said annular member, and a support for said motor secured to said concave surface.

9. A ventilating device having in combination, a conduit adapted to be disposed in a passage extending through a vertical wall of a building, said conduit fitting in and extending through said passage, an annularmember having a peripheral portion disposed against the outer side of said wall and having a free annular edge spaced from said wall,'means securing said peripheral portion to said wall, said member having an inner portion with a concave surface extending from said free edge substantially to said side of said wall, a motor supported by said member and spaced outwardly axially therefrom, a

10. The structure set forth in claim 9, said fan being of the centrifugal type and being disposed at the outer side of said passage.

-11. A ventilating device for a building, having a vertical Wall with a substantially horizontal passage extending therethrough having in combination, a conduit disposed in said passage and extending therethrough, an annular member secured to said wall at the outer side thereof and having an-inner concavelsurface extending substantially to said conduit, a centrifugal fan disposed within said annular member substantially coaxially of the same and said conduit,

a motor having its driving shaft secured to said fan for driving said fan, a dome-like casing secured to said motor enclosing the same, and coaxial therewith and having a free inner edge disposed within said concave surface, and a support for said motor secured to said annular member.

12. A ventilating device having in combination,v a conduit adapted to be disposed in a substantially horizontal passage extending through a vertical wall of a building and extending through said passage, an annular member secured to the outer side of said wall and having an annular concave surface coaxial with said passage and extending radially outward and away ,fromsaid Wall, a motor, asupport forsaid motor secured to said member, said motor being disposed outwardly of said member, a centrifugal fan driven by said motor and disposed outwardly of said conduit and between the same and said motor, and a dome-shaped casing enclosingsaid motor having an open inner side with an annular free edge adjacent to but spaced radially inwardly from the outer portion of said concave surface, said motor, fan and passage being in substantial axial alinernent.

LOUIS J. JENN.

REFERENCES CITED The following references are of record in'the 'file of this patent:

UNITED STATES PATENTS Number Name Date 1,272,064 Lezius July 9, 1918 1,427,859 Schmidt Sept. 5, 1922 1,575,447 Moore Mar. 2, 1926 1,600,522 Strehlke Sept. 21, 1926 1,773,453 Flettner Aug. 19, 1930 1,889,117 Adamcikas Nov. 29, 1932 2,179,893 Lyon Nov. 14, 1939 2,188,741 Roberts Jan. 30, 1940 2,228,116 11g et a1. Jan. 7, 1941 2,322,302 Martinson June 22, 1943 2,378,012 Herbster, June 12, 1945 

